T
he process
fi
tting must be sealed if there is gauge or low pressure in
the vessel
.
B
efore use
,
check if the seal material is resistant against
the measured product and the process temperature
.
T
he max
.
permissible pressure is speci
fi
ed in chapter
"
T
echnical data
"
or on the type label of the sensor
.
T
he vibrating level switch is a measuring instrument and must be
treated accordingly
.
B
ending the vibrating element will destroy the
instrument
.
W
arning
:
T
he housing must not be used to screw the instrument in
!
A
pplying
tightening force can damage internal parts of the housing
.
U
se the hexagon above the thread for screwing in
.
4
.
2
M
ounting instructions
D
ue to the e
ff
ects of agitators
,
equipment vibration or similar
,
the level
switch can be subjected to strong lateral forces
.
F
or this reason
,
do not
use an overly long extension tube for
LBV
331
,
but check if you can
mount a short level switch on the side of the vessel in horizontal
position
.
E
xtreme vibration caused by the process or the equipment
,
e
.
g
.
agitators or turbulence in the vessel e
.
g
.
from
fl
uidization
,
can cause
the extension tube of
LBV
331
to vibrate in resonance
.
T
his leads to
increased stress on the upper weld joint
.
S
hould a longer tube version
be necessary
,
you can provide a suitable support directly above the
tuning fork to secure the extension tube
.
T
his measure applies mainly to applications in
E
x areas
.
M
ake sure that
the tube is not subject to bending stress due to this measure
.
I
f
LBV
331
is mounted in the
fi
lling stream
,
unwanted false measure
-
ment signals can be generated
.
F
or this reason
,
mount
LBV
331
at a
position in the vessel where no disturbances
,
e
.
g
.
from
fi
lling openings
,
agitators
,
etc
.,
can occur
.
T
his applies particularly to instrument types with long extension tube
.
P
ressure
/
V
acuum
H
andling
A
gitators and
fl
uidiza
-
tion
I
n
fl
owing medium
LBV
331
• -
transistor
(
NPN
/
PNP
)
11
4
M
ounting
39165
-
EN
-
110621
Содержание LBV 331
Страница 1: ...D F GB S B E T R I E B S A N L E I T U N G LBV 331 Transistor NPN PNP...
Страница 33: ...34 mm 1 34 178 mm 7 01 Abb 30 Temperaturzwischenst ck LBV 331 Transistor NPN PNP 33 9 Anhang 39165 DE 110617...
Страница 34: ...34 LBV 331 Transistor NPN PNP 9 Anhang 39165 DE 110617...
Страница 35: ...LBV 331 Transistor NPN PNP 35 9 Anhang 39165 DE 110617...
Страница 37: ...GB O P E R AT I N G I N S T R U C T I O N S LBV 331 transistor NPN PNP...
Страница 69: ...34 mm 1 34 178 mm 7 01 Fig 30 Temperature adapter LBV 331 transistor NPN PNP 33 9 Supplement 39165 EN 110621...
Страница 70: ...34 LBV 331 transistor NPN PNP 9 Supplement 39165 EN 110621...
Страница 71: ...LBV 331 transistor NPN PNP 35 9 Supplement 39165 EN 110621...
